California County Naturalizations, 1831-1985

County naturalization records for Alameda, Amador, Alpine, Butte, Calaveras, Clousa, El Dorado, Fresno, Glenn, Lake, Lassen, Los Angeles, Mendocino, Napa, Nevada, Orange, Placer, Sacramento, San Francisco, Sonoma, Santa Clara, Stanislaus, Santa Barbara, San Benito, San Diego, Solano, Sutter, Yolo, and Yuba counties. Coverage dates will vary by county.